2017, September 11: Venus and Mercury


Brilliant Venus continues to dominate the predawn eastern skies during late summer.  Elusive Mercury appears low in the sky as dawn approaches.  For the next few mornings it appears near the star Regulus.  (Click the image to see Regulus and Mercury.)  As in this indicated in this image, find a clear horizon to see Mercury.  Binoculars help find the planet.  Mercury rises about 1.5 hours before sunrise, about the time that morning twilight begins.

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